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Commitments and Contingencies (Narrative) (Details) $ in Millions	Dec. 20, 2024 Plaintiff	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023
Mooresville Coal Ash Class Action Litigation
Loss Contingencies [Line Items]
Number of plaintiffs \| Plaintiff	15
Duke Energy Carolinas \| Asbestos-related Injuries and Damages Claims
Loss Contingencies [Line Items]
Asbestos-related injuries and damages reserves		$ 387	$ 396
Probable insurance recoveries		539	539
Duke Energy and Duke Energy Carolinas \| ASU 2016-13
Loss Contingencies [Line Items]
Reserve for credit losses for insurance receivables		$ 9	$ 9
Duke Energy Indiana
Loss Contingencies [Line Items]
Settlement disbursement period				2 years